Brush



RI C1 BRUSH.

APPLICATION HLED JUNE 1. 1920.

Patentd June 20, 1922.7

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RICHAR c. MCGABEYQOF BERLIN, NEW HAMPSHIRE.

BRUSH.

Specification of Letters Patent. Patented tine 19 22.

Application filed June 1, 1920. Serial No. 385,756.

To all whom it may concern:

Be it known that I, RICHARD C. MOGAREY, a citizen of the United States, residing at Berlin, in the county of Coos and State of New I-Iampshire,have invented certain new and useful Improvements in Brushes, of which the following is a specification.

The present invention relates to brushes such as may be used to scrub and clean" metallic or other surfaces.

The principal objects of the invention are to provide a brush which is particularly well adapted for use in removing carbon from the firing chambers and piston heads of internal combustion engines or which will remove any undesirable material from even the most inaccessible portions of any surface regardless of its composition; to so form and hold the bristles of the brush that they cannot possibly be accidentally removed or loosened in ordinary service; and to so con struct such a brush that is simpleinconstruction and assemblage and in which the bristles may be replaced when worn, making the brush, therefore, quite inexpensive in both original cost and upkeep.

Other objects and advantages of the invention will appear in the following detailed description, taken in connection with the accompanying drawings, forming a part of this specification, and in which drawings:

Figure 1 is a side elevation of a brush embodying my invention. I

Figure 2 is a side elevation taken at a right angle to Figure 1.

Figure 3 is a view partly in side elevation and partly in central vertical section, and

Figure 4 is a side elevation of the lower portion of the handle of the'brush with the bristles and binding element removed therefrom.

In the drawing, where similar characters refer to similar parts throughout the views, A designates the handleportion of the brush provided with bristles B of wire or any suitable material depending upon the uses for which the brush is intended and which are held in position by a binding element C which is preferably of wire.-

The handle A may be of any convenient formation having spaced'projecting arms 5 at one end and whose confronting sides are A. pin 6 passes transversely through holes 7 in the arms 5 and across the space 8 between the arms.

The bristles B are bent over the pin 6 approximately midway of their length. Since the bristles may be all of an approximately-uniform length, the more remote the bristles are from the pin, 6 the less their ends will project from the handle of the brush, and the ends of the bristles will thus present an arcuate curve whose axis is transverse to the longitudinal axis of the brush handle.

Since the inner and confronting sides of the projecting arms 5 of the handle are parallel the two sides of the group of bristles will be in parallel planes asshown in the drawings.

One end of the binding element C is inserted in the socket 9 in the-lower portion of the handle and it is then bent at the outer end of the socket and is tightly and closely wound about the arms 5, bristles B and pin 6. At the lower end of the arms 5 the end of the wire is either permanently or temporarily fastened in any suitable manner. It will be seen that the binding element C will encircle the bristles B and so hold their free ends substantially in parallelism and will positively prevent the bristles from being removed or even being loosened from their .position on the pin 6 which cannot itself become misplaced from the arms 5 because of the closely wound element C.

In operation the brush is merely grasped and used to scrub the surface to be cleaned in the usual manner. Its great advantages are that the arcuate curve of the line of the end of the bristles and the flatness of the sides of the group of bristles permit its use in what are ordinarily quite inaccessible parts of the firing chambers and piston heads, such as the corners in the cylinder head and at the bottom of the firing chambers. As these corners are rounded the scrapers which are generally used n the removal of carbon, or a brush with a round group of bristles having a flat end cannot reach the deepest portion of the curved cor- 11ers but merely pass over them leaving the carbon there.

other uses which will suggest themselves to the user. In all of these uses it has the great advantage of being so constructed that its bristles may be easily replaced as they be-. come worn by merely unfastening the lower] ends of the bindingelement C and removing it from about the bristles and removing such bristles as are desired and replacing them with other bristles, and, when wire bristles are used, ordinary wire of the proper gauge may be cut into suitable lengths and bent about the pin 6 after which the binding element C is coiled about the arms 5 and the bristles and fastened in the aforementioned manner.

It is to be understood that the form of my invention shown and described is to be taken as a preferred example of the same, and that various changes in the shape, size, and arrangement of parts may be resorted to with out departing from the spirit of the invention or the scope of the subjoined claims.

I claim:

1. A brush comprising a handle having spaced projecting arms at an end, a pin placed transversely of the space between and passing through said arms, bristles bent about said pin intermediately of their length, and means encircling the bristles, pin, and arms to hold the free ends of the bristles in substantial parallelism.

2. A brush comprising a handle having spaced projecting arms at an end whose con fronting surfaces are parallel, a pin placed transversely of the space between and passing through said arms, bristles of approxi mately uniform length bent about said pin intermediately of their length so that their ends will form an arcuate line whose axis is transverse to the longitudinal axis of said handle, the sides of the group of bristles being approximately parallel, and means encircling the bristles, pin, and arms to hold the free ends of the bristles in substantial parallelism.

RICHARD C. McGAR-E Y. 

